Seat structure



Oct. 23, 1928. 1, 39,024

G. H. HAMILTON ET-AL SEAT STRUCTURE Filed July 1927 2 Sheets-Sheet 1 tt/nu: W 6&2,

A TTORNE y INVENTORS:

Oct. 23, 1928. 1,689,024

G. H. HAMILTON ET AL SEAT STRUCTURE Filed July 1927 2 Sheets-Sheet 2 I,m VENTORJ: 6 2013 2, II H 2 BY flay HYVYFLIZZ A TTORNZY Patented Oct.23, 19 28.

rtaerzi rarest errata GEORGE E. HAMILTON, on GRAND RAPIDS, AND ROY A.WHITE, on WALKER rowa SHIP, KENT GOU'NTY, MICHIGAN, ssIeNoa r AMERICANSEATING COMPANY, or

GRAND RAPIDS, MICHIGAN, A oonrouArIoN or New JEnsnY.

SEAT STRUCTURE.

Application filed. July 5, 1927. Serial No. 203,496.

The present invention relates to seat structures, particularly such asare used in schools and in connection with desks; and its object is toprovide such a structure having improved adjustable leg rests forpersons requiring the same.

This and other and more specific objects hereinafter appearing areattained by, and the invention finds preferable embodiment in,

the structure hereinafter particularly described and illustrated by theaccompanying drawings, in which Figure 1 is a side viewof a combinedseat and desk structure provided with leg rests; Figure 2 is a side viewof a. portion of the means foradjusting the position of one of the legrests;

Figure 3 is a sectional view thereof taken on line 33 of Figure 2; 20Figure 4 is a transverse sectional view of portions of the same;

Figure 5 is a bottom plan view of said leg rest; V 7

Figure 6 is a left-hand end view of a por- 25 tion of the combinedstructure, showing a second leg rest;

Figure 7 is a vertical sectional view of a port-ion of the. same takenon line 77 of Figure '6; and j Figure 8 is a vertical sectional view ofa portion of the seat illustrating the rotatable mounting thereof.

1 In the embodiment of the invention illustrated by said drawings, thecombined seat 3 and desk structure particularly adapted for use inschools has a seat'l and desk 2having legs 3 and 4 respectively andconnected by a horizontal member5. Mounted inconnection with the seat 1are a pair of rest-s for the upper 40 portions of the legs of theoccupant, each rest comprising a body portion 6 mounted at the forwardedge of the seat, swingably on. a. horizontal axis 7 This body portion 6r carries a leg-supporting portion 8 slidable toward and away from theseat in a way 9 in said body portion, to adjusted positions in whichsaid leg-supporting portion 8 may be releasably held by'a threaded rod10 carried by this leg-supporting portion and having a wing nut 11 whosehead 12 bears on the body portion 6 adjacent its slot 13 through whichthis rod extends. Means are provided for swinging in a vertical planeand for releas ably holding in swung positionsthis leg rest,

such means-as shown comprising a fixed member designated generally 14carried by the seat and having an arcuate surface 15, and an armmember16 mountedswingably 0on centrically with said arcuate surface andhavmg a surface 18 inclined relatively thereto, A clamping element, asthe ball 19is adapted to be moved along and between said surfaces in thedirection in which these surfaces ap proach each other to a positionwherein said ball element wedgingly engages between said surfaces toclamp the members 14 and 16 against interrelative movement, said element19 being pressed in said direction and to such position by a coiledspring20. A link 21 is pivotally connected at 22 and 23 respec tively tothe swingable arm member 16 and the body portion 6 of said leg rest sothat in the clamping position of the ball element 19 the leg rest isheld in the swung position to which it may have been moved by said armmember or otherwise. The element or ball 19 is released from itsclamping action and moved against the pressure of spring by an arm 24swingably mounted concentrically with the arm member 16, and providedwith'a handle portion 25 and an inward projection 27 engaging the ballelement 19. 7 As shown, a pair of such arms 24, a pair of ball elements19 and a. pair of springs 20 abutting on an-intermediate stop 26 areprovided, so that the handle portions 25 of these arms 24 may be pressedby hand toward each other their clamping action. I

vBy mounting the parts so that the arm member 16 is keyed at 28 on ashaft 29 rock; able in a bearing 30 in member 14, and by mounting thearms 24 on said shaft with a' turning movement thereon limited as bymeans of. the shafts projections 3.1. engag-v ing one of thespaced-sides of the axially-exthus releasing both elements or balls-19from tending grooves 32 of the arms 24 (as seen in Figure 4), the armmember 16 and said leg rest may be swung by the arms 24 (in the releasedposition of the ball elements 19) to desired positions;

A second pair of rests (for the lower or ankle portions of the legs ofthe occupant) are shown, comprising a bodyportion 35 releasably held inadjusted vertical positions as by the set screw 36 threaded in thecollar37 of said bodyportion and engaging the upright 38 on which the desk 2-is carried, each of said rests comprising also a leg support 39 having aconvex bearing surface 40 turnable in a vertical plane on the concavebearing surface 41 of the body portion. A threaded bolt 42 extendsthrough an opening 43 in the body portion 35 and through a slot 44 ofthe leg support 39 and carries a nut 45, so that this bolt may be turnedby its wheel handle 46 to clamp the leg support 39 in adjusted turnedpositions. This leg support carries a foot rest 47 movable toward andfrom the seat to adjusted positions in which it is releasably held as byits pin 48 adapted to be inserted-into any one of a series of holes 49,such series extending in the longitudinal direction of support 39. Theseat 1 may be mounted turnably in a horizontal plane on its uprightsupport 50 as shown in Figure 8.

Although the arms 24 may turn freely and not limitedly as shown inFigure 4, their handles 25 may be pressed toward each other 1sufficiently to compress the springs completely against the stop 26,whereupon the swinging movement of these arms 24 thus held together willswing the arm member 16 although the same be not keyed as hereinbeforeset forth.

rest particularly shown in Figures 1 and 5.

are to be made the subject of a. divisional applicationfor patent.

The invention being intended to be pointed out in the claims, is not tobe limited to or by details of construction of any particular embodimentthereof illustrated by the draw ings or hereinbefore described.

What is claimed is:

1. In a structure of the character described: a seat; a leg rest mountedin connection therewith swingably in a vertical plane; means carried inconnection with the seat for holding the leg rest in adjustable swungpositions, comprising a fixed member having an arcuate surface, aswingably mounted member having a surface inclined to said arcuatesurface, a clamping element adapted to be moved along said surfaces,means for releasably moving said element into wedgingly clampingengagement between said surfaces, and connections between the leg restand said second-mentioned member for swinging the leg rest by theswinging movement of said second-mentioned member. I

2. In a structure of the character described: a seat; a legrest mounted'inconnection therewith swingably in a vertical plane; means carried inconnection with the seat for holding the leg rest in adjustable swungpositions, comprising a fixed member having an arcuate surface, aswingably mounted mem-' ber having a surface inclined to saidarcuatesurface, aclamping element spring-pressed along'said surfaces intowedgingly clamping engagement therebetween, a swingably mounted armengaging said element to move the same reversely, and connectionsbetween the leg rest and said second-mentioned mem ber for swinging theleg rest by the swing ing movement of said second-mentioned member. I

3. In a structure of the character described: a seat; a leg rest mountedin connection therewith swingably in a vertical plane; means carried inconnection with the seat for holding the leg rest in adjustable swungpositions, comprising a fixed member having an arcu'ate surface, aswingably mounted member having a surface inclined to said arcuatesurface, a clamping element spring-pressed along said surfaces intowedgingly clamping engagement therebetween, means for moving saidelement reversely, and connections between the leg rest and saidsec0nd-mentioned member for swinging the leg rest by the swingingmovement of said. second-mentioned member.

4. In a structureof the character described: a seat, a leg rest mountedin connection therewith swingably in a vertical plane and having a bodyportion and a leg-supporting portion slidable toward and from the seatto adjustably held positions on the body portion; means carried inconnection with the seat for holding said body portion in adjustableswung positions, comprising a fixed member having an arcuate surface, aswingably mounted member having a surface inclined to said arcuatesurface, a clamping element adapted to be moved along said surfaces,

means for releasably moving said element into wedgingly clampingengagement between said surfaces, and connections between said bodyportion and said second-mentioned member for swinging said body portionby the swinging movement of said second-mentioned member.

5. In a structure of the character, described a seat a leg rest mountedin connectiontherewith swingably in avertical plane; means carried inconnection with the seat for hold ing a limited turning movement on therock sh aft and engaging said holding means in sa1d limlted movement tooperate the same.

6. In a structureof the character described:

ing a stop and a surface inclined to said ar cuate surface, a pair ofclamping elements oppositely spring-pressed from the stop along saidsurfaces into wedgingly clamping engagement therebetween, a pair ofswingably mounted arms engaging said elements respectively to move thesame reversely, and connections between the leg rest and saidsecond-mentioned member for swinging the leg rest by the swingingmovement of said second-mentioned member.

In testimony whereof we have hereunto 10 set our hands at Grand Rapids,Michigan, this 30th day of June, 1927.

GEORGE H. HAMILTON. ROY A. WHITE.

